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中文摘要：
利用自制的双芯光子晶体光纤（D-PCF）与单模光纤（SMF）熔接,并在熔接点塌陷空气孔,提出了一种新型的D-PCF马赫-曾德干涉仪（MZI）。利用图像提取法和有限元方法,分析并计算了实际拉制出的D-PCF支持的光纤模式。经过分析发现,这种新型光纤干涉仪的主要干涉模式是环芯模式,不同于传统光纤干涉仪的干涉模式。实验观测了D-PCF长度及第1个完全塌陷区长度对干涉仪周期、传输谱及空间频率谱的影响。并对D-PCF MZI的应力特性进行了实验研究。结果表明,干涉仪的波长位移与应力呈良好的线性关系,线性度为
英文摘要：
A novel Mach-Zehnder interferometer（MZI） is proposed by splicing a section of homemade dual-core photonic crystal fiber（D-PCF） and two segments of single mode fibers（SMFs） and collapsing the air holes in the splice regions.The mode characteristics of the cross section were analyzed with the image-extracted method and the finite element method.The results show that the interferring modes of the novel MZI are the ring-core modes,which is different from the traditional interferometer.The relations between the interference patterns and the lengths of D-PCF and the first fully collapsed region are investigated.The strain response was also investigated experimentally.The results show that the relation between the wavelength shift of the interferometer and strain has a good linearity of 0.999 4,and the strain sensitivity is 1.26 pm/με.
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